Definition of Pentagonese in English:
 Pentagonese
noun ˌpɛntəɡəˈniːzˌpentəɡänˈēz
mass nounUS informal The euphemistic or cryptic language supposedly used among high-ranking US military personnel.
 Example sentencesExamples
-  ‘Synergism’ is Pentagonese for ‘choreographing a military ballet.’
 -  After ‘embedded’ was accredited in Pentagonese, TV news channels grabbed and ran with it, and it was free for all.
 -  Or, to borrow a phrase currently hip in Pentagonese, new ways of ‘degrading’ the language.
 -  What Iraq suffers from most, it seems, is a shortage of trained memo writers and answers of ‘snowflakes’ (a Pentagonese expression that I think refers to urgent questions from the cabal.)
 -  Seriously though, the funniest part of the story is the Pentagonese for ‘lapdance’ is ‘client-focused exotic dancing.’
 
Origin
  
1950s: from pentagon + -ese.